Question

state conditions for steady interference pattern
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Answer 1

Conditions for Obtaining Steady Interference Pattern:

That is these two sources should emit light waves with a constant phase difference. The two sources of light must be monochromatic. The distance between the sources and the screen must be reasonably large. The distance between coherent sources must be small.

Answer 2

The amplitudes of waves must be equal. i.e. the brightness of the two sources should be the same.The sources should emit light waves in nearly the same direction. The two interfering waves must be in the same state of polarization.

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